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经营范围
发明名称
Perfectionnements aux postes émetteurs de t. s. f.
摘要
申请公布号
FR712529(A)
申请公布日期
1931.10.03
申请号
FRD712529
申请日期
1930.06.17
申请人
LA RADIO-INDUSTRIE
发明人
分类号
H03J5/24
主分类号
H03J5/24
代理机构
代理人
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